Since updating to Mavericks a few months ago I've had this problem with Adium. I spend the majority of my time in Adium in an AIM chat, and where it used to show me everyone's status messages (including my own) under the usernames in the sidebar of the chat window, it now only shows them for a couple of people (and doesn't show mine, including on mouseover). For example, right now I'm in a chat with three other people, and I know for a fact that I have a status message (according to the Adium status menu, anyway) and one other person just changed theirs (the message isn't showing under their name, but on mouseover I can see what it is). Another person has a status message, and it's visible under their name.

For my own statuses, even setting one message for all of my online accounts doesn't show it on mouseover for me.